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Code Issues Releases Activity

bdk: touch: reorder power on

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So touch IC reset can be properly done on a fast power cycle.
This commit is contained in:
CTCaer 2023-03-31 09:08:20 +03:00
parent f4bf48e76a
commit 50811aacfa
1 changed files with 15 additions and 9 deletions
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24
bdk/input/touch.c
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@ -401,23 +401,29 @@ static int touch_init()
int touch_power_on()
{
// Enable LDO6 for touchscreen AVDD supply.
max7762x_regulator_set_voltage(REGULATOR_LDO6, 2900000);
max7762x_regulator_enable(REGULATOR_LDO6, true);
// Configure touchscreen VDD GPIO.
PINMUX_AUX(PINMUX_AUX_DAP4_SCLK) = PINMUX_PULL_DOWN | 1;
gpio_direction_output(GPIO_PORT_J, GPIO_PIN_7, GPIO_HIGH);
// Configure Touscreen and GCAsic shared GPIO.
PINMUX_AUX(PINMUX_AUX_CAM_I2C_SDA) = PINMUX_LPDR | PINMUX_INPUT_ENABLE | PINMUX_TRISTATE | PINMUX_PULL_UP | 2;
PINMUX_AUX(PINMUX_AUX_CAM_I2C_SCL) = PINMUX_IO_HV | PINMUX_LPDR | PINMUX_TRISTATE | PINMUX_PULL_DOWN | 2;
PINMUX_AUX(PINMUX_AUX_CAM_I2C_SCL) = PINMUX_IO_HV | PINMUX_LPDR | PINMUX_TRISTATE | PINMUX_PULL_DOWN | 2; // Unused.
gpio_config(GPIO_PORT_S, GPIO_PIN_3, GPIO_MODE_GPIO); // GC detect.
// Configure touchscreen Touch Reset pin.
PINMUX_AUX(PINMUX_AUX_DAP4_SCLK) = PINMUX_PULL_DOWN | 1;
gpio_direction_output(GPIO_PORT_J, GPIO_PIN_7, GPIO_LOW);
usleep(20);
// Enable LDO6 for touchscreen AVDD and DVDD supply.
max7762x_regulator_set_voltage(REGULATOR_LDO6, 2900000);
max7762x_regulator_enable(REGULATOR_LDO6, true);
// Initialize I2C3.
pinmux_config_i2c(I2C_3);
clock_enable_i2c(I2C_3);
i2c_init(I2C_3);
usleep(1000);
// Set Touch Reset pin.
gpio_write(GPIO_PORT_J, GPIO_PIN_7, GPIO_HIGH);
usleep(10000);
// Wait for the touchscreen module to get ready.
touch_wait_event(STMFTS_EV_CONTROLLER_READY, 0, 20, NULL);